SOIF Problems and Solutions

The selection that picks Brazil's IPhO team from the top finishers of the Brazilian Physics Olympiad. Archived here is the first selection round; a second round and an experimental round are also sat.

2026

Brazil

Problems5 problemsProblemsSolutions
  • 1Física de foguetesnot published
  • 2Cone de Machnot published
  • 3Viagem de balãonot published
  • 4Michelson–Morley e LIGOnot published
  • 5Vasos comunicantes no trem aceleradonot published

2025

Brazil

Problems5 problemsProblemsSolutions
  • 1Oscilações acopladasnot published
  • 2Transferência de órbitasnot published
  • 3Trocador de calornot published
  • 4Interferência por espelhosnot published
  • 5Óptica do arco-írisnot published

2024

Brazil

Problems5 problemsProblemsSolutions
  • 1Superfície “harmônica”not published
  • 2Um problema simples sobre fluidos contínuosnot published
  • 3Motor a combustão internanot published
  • 4Ondas sonorasnot published
  • 5Ondas guiadasnot published

2023

Brazil

Problems5 problemsProblemsSolutions
  • 1Cinemáticanot published
  • 2Dinâmicanot published
  • 3Termodinâmicanot published
  • 4Oscilaçõesnot published
  • 5Ópticanot published

2021

Brazil

Problems6 problemsProblemsSolutions
  • 1Mecânicanot published
  • 2Termodinâmicanot published
  • 3Óptica geométricanot published
  • 4Mecânica de fluidosnot published
  • 5Eletricidadenot published
  • 6Magnetismonot published